Joseph goldmark



gums totes gaunt @l'fire.

JOSEPH GOLDM AR-K, OF BROOKLYN. NEW YORK.

Letters Patent No. 69,206, dated September 24, 1867.

IMPROVED FULMINATING COMPOUND.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, JOSEPH GOLDMARK, of the city of Brooklyn, in thecounty of Kings, and State of New York, haveinvented a new FulminatingCompound; and I do hereby declare that the following is :1 full andexact description of the same.

Therm-ions so-calleil fulminating compounds, igniting by friction orpercussion, heretofore manufactured, are liable to serious objections,either on account of their corrosive action upon metals with which theyare brought in contact, the great danger from accidental explosion intheir manufacture, or their deleterious effects upon the health of thoseemployed in their preparation. The object of this invention is to obtaina. fulminnting compound which is free from these objections, and whichcan also be produced ata less price, and to thesc (Hills the inventionconsists inn compound in which the sulphocyonite of a metal or otherbase is used in combination with chlorate of potash, either with orwithout the addition of other substances.

The sulphocyanite which I have found in practice, all things considered,best adapted for the manufacture of such compounds is the sulphocyaniteof lead, but among others which I nill mention as more or less suitableare the sulphocycnites of copper, zinc, and quicksilver, but these areall more expensive than that of lead.

I mix the sulphocyzmite and the chlorate of potash, in the stateofpowdc'r. The proportion which} consider best, in using thesulphocynnite of lead, are two (2) parts, by weight, of thissulpliocyanite, and live (5) parts of chlorate oi' potash, and to this Igenerally add one (1) part of saltpetreoi' of prussiate of pot-ash, or alesser proportion of ench of the latter ingredients, the eiicct of whichis to increase the flame and diminish the explosive force.Theabove-specified proportions of all theingredients may, however, bevaried to some extent without materially changing the character of thecompound. i

What I claim as my invention, and desire to secure by Letters Patent,is-- X1 fulminating compound, in which the sulphocyunite' of a metal orother base is employed, in combination with chlorate of potash, eitherwith or'wit'ucutother substances, substantially 'as herein specified.

.J. GOLDMARK.

Witnesses:

' J. W. Comics,

A. Ls CLERC.

